
.bannerWrapper {
    position: relative; 
    width: 100%;
    height: 50vh;
    background: rgba(51, 51, 51,.3);
    display: flex;
    justify-content: space-around;
    // align-items: center;
    overflow: hidden;
    background: url('/banner3.png') no-repeat 0 0;
    background-size: 100%;
    background-attachment: fixed;
    i{
        position: absolute;
        bottom: 30px;
        left: calc(50% - 20px);
        font-size: 40px;
        color: #fff;
        z-index: 1;
        opacity: 1;
        cursor: pointer;
        animation: btnshow 1s infinite;
    }
    @keyframes btnshow {
        0%{
            opacity: .8;
            bottom: 30px;
        }
        50%{
            opacity: .3;
            bottom: 20px;
        }
        100%{
            opacity: .8;
            bottom: 30px;
        }
    }
}

@media screen and (max-width: 750px) {
    .bannerWrapper {
        width: 100%;
        height: 230px;
    }
}